Fix (Op(f)(x)).subs(f(x),g(x))
Fix (Op(f)(x)).subs(f(x),g(x))

mafiya69/sympy,kaushik94/sympy,yashsharan/sympy,Titan-C/sympy,garvitr/sympy,jaimahajan1997/sympy,Mitchkoens/sympy,pandeyadarsh/sympy,MridulS/sympy,amitjamadagni/sympy,sunny94/temp,cswiercz/sympy,kaichogami/sympy,toolforger/sympy,Gadal/sympy,ahhda/sympy,ChristinaZografou/sympy,moble/sympy,jbbskinny/sympy,AkademieOlympia/sympy,ryanGT/sympy,maniteja123/sympy,dqnykamp/sympy,yukoba/sympy,pbrady/sympy,kaushik94/sympy,lindsayad/sympy,kmacinnis/sympy,jerli/sympy,souravsingh/sympy,skidzo/sympy,shikil/sympy,chaffra/sympy,AunShiLord/sympy,debugger22/sympy,pbrady/sympy,abloomston/sympy,atsao72/sympy,Shaswat27/sympy,liangjiaxing/sympy,pernici/sympy,Shaswat27/sympy,jerli/sympy,diofant/diofant,sahmed95/sympy,hrashk/sympy,meghana1995/sympy,debugger22/sympy,Curious72/sympy,lidavidm/sympy,Curious72/sympy,sahilshekhawat/sympy,meghana1995/sympy,Vishluck/sympy,ga7g08/sympy,abloomston/sympy,beni55/sympy,wanglongqi/sympy,madan96/sympy,grevutiu-gabriel/sympy,farhaanbukhsh/sympy,Sumith1896/sympy,cccfran/sympy,wyom/sympy,hrashk/sympy,postvakje/sympy,bukzor/sympy,atsao72/sympy,souravsingh/sympy,tovrstra/sympy,cccfran/sympy,Titan-C/sympy,maniteja123/sympy,MridulS/sympy,bukzor/sympy,hrashk/sympy,skirpichev/omg,Shaswat27/sympy,pandeyadarsh/sympy,AkademieOlympia/sympy,hazelnusse/sympy-old,Arafatk/sympy,beni55/sympy,liangjiaxing/sympy,mcdaniel67/sympy,Davidjohnwilson/sympy,mcdaniel67/sympy,abloomston/sympy,shikil/sympy,lindsayad/sympy,chaffra/sympy,yukoba/sympy,yashsharan/sympy,jerli/sympy,emon10005/sympy,VaibhavAgarwalVA/sympy,drufat/sympy,amitjamadagni/sympy,vipulroxx/sympy,kevalds51/sympy,hargup/sympy,sahilshekhawat/sympy,Curious72/sympy,oliverlee/sympy,madan96/sympy,ahhda/sympy,lidavidm/sympy,hargup/sympy,abhiii5459/sympy,shipci/sympy,oliverlee/sympy,VaibhavAgarwalVA/sympy,kaichogami/sympy,jbbskinny/sympy,saurabhjn76/sympy,ga7g08/sympy,Mitchkoens/sympy,dqnykamp/sympy,shipci/sympy,srjoglekar246/sympy,sahmed95/sympy,skidzo/sympy,rahuldan/sympy,vipulroxx/sympy,asm666/sympy,asm666/sympy,cswiercz/sympy,lindsayad/sympy,garvitr/sympy,cccfran/sympy,atsao72/sympy,pandeyadarsh/sympy,sunny94/temp,kumarkrishna/sympy,Sumith1896/sympy,MechCoder/sympy,iamutkarshtiwari/sympy,atreyv/sympy,ChristinaZografou/sympy,lidavidm/sympy,maniteja123/sympy,aktech/sympy,dqnykamp/sympy,kumarkrishna/sympy,Vishluck/sympy,meghana1995/sympy,saurabhjn76/sympy,drufat/sympy,liangjiaxing/sympy,ChristinaZografou/sympy,kmacinnis/sympy,ahhda/sympy,wyom/sympy,hazelnusse/sympy-old,MridulS/sympy,mafiya69/sympy,saurabhjn76/sympy,asm666/sympy,Mitchkoens/sympy,aktech/sympy,chaffra/sympy,MechCoder/sympy,skidzo/sympy,sunny94/temp,Designist/sympy,VaibhavAgarwalVA/sympy,kevalds51/sympy,minrk/sympy,beni55/sympy,toolforger/sympy,fperez/sympy,farhaanbukhsh/sympy,atreyv/sympy,garvitr/sympy,rahuldan/sympy,grevutiu-gabriel/sympy,farhaanbukhsh/sympy,moble/sympy,abhiii5459/sympy,sampadsaha5/sympy,wanglongqi/sympy,emon10005/sympy,grevutiu-gabriel/sympy,aktech/sympy,jamesblunt/sympy,mattpap/sympy-polys,ga7g08/sympy,sahmed95/sympy,AunShiLord/sympy,drufat/sympy,Davidjohnwilson/sympy,Arafatk/sympy,jamesblunt/sympy,iamutkarshtiwari/sympy,sampadsaha5/sympy,toolforger/sympy,KevinGoodsell/sympy,kaushik94/sympy,shipci/sympy,sampadsaha5/sympy,bukzor/sympy,postvakje/sympy,emon10005/sympy,jaimahajan1997/sympy,iamutkarshtiwari/sympy,Designist/sympy,madan96/sympy,Arafatk/sympy,hargup/sympy,yukoba/sympy,oliverlee/sympy,kumarkrishna/sympy,minrk/sympy,Titan-C/sympy,mafiya69/sympy,shikil/sympy,wanglongqi/sympy,yashsharan/sympy,cswiercz/sympy,souravsingh/sympy,mcdaniel67/sympy,debugger22/sympy,postvakje/sympy,jaimahajan1997/sympy,Gadal/sympy,atreyv/sympy,rahuldan/sympy,jbbskinny/sympy,AunShiLord/sympy,sahilshekhawat/sympy,jbaayen/sympy,moble/sympy,kevalds51/sympy,jamesblunt/sympy,Vishluck/sympy,kmacinnis/sympy,vipulroxx/sympy,flacjacket/sympy,AkademieOlympia/sympy,Gadal/sympy,abhiii5459/sympy,kaichogami/sympy,Davidjohnwilson/sympy,Sumith1896/sympy,MechCoder/sympy,pbrady/sympy,Designist/sympy,wyom/sympy